定义有5个整数型元素的数组，正确的语句是
A．Dim a(4) As Integer
B．Option Base 1:Dim a(5)
C．Dim a & (5)
D．Dime a(5) As Integer
参考答案：A
解析： 在选项B中，语句OptionBase1不能放在过程中与Dim语句写在一行；选项C中，使用了多余的字符“&”；选项D中的关键字错误。选项A中的4表示最大下标的值，而起始下标默认为0，数组包含a(0)～a(4)5个元素。
| Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. |
According to the passage, what will probably happen to the endangered species
A．They will gradually die out.
B．They will be able to survive in the preserves.
C．They will have to migrate to find new homes.
D．They will face extinction without artificial reproduction.